矿山安全技术普通施工法一般采用钻眼爆破的方法，我国煤矿中，主要用于立井井筒及溜煤眼、

n边形的每个外角都等于45°，则n=______．

下列各句中没有语病的一句是( )。

A．他马上召集常委会进行研究，统一安排了现场会的内容、时间和出席人员，以及会议中应注意的问题

B．某工厂以技术进步为动力，不断致力于新产品、新技术、新工艺、新材料的研制开发

C．当前和今后一个相当长的时间内，每年进入劳动年龄的人口数很大，安排城镇青年劳动力就业是一项相当繁重的任务

D．由于改编者没有很好地理解原作的精髓，任凭主观想象，加入了许多不恰当的情节，反而大大地减弱了原作的思想性

2011年6月11日，中国北方网新闻中心新闻：一项历时近10年的自然灾害风险研究成果《中国自然灾害风险地图集》近日在北京发布，其中呈现出中国自然灾害风险等级“东部高于中部，中部高于西部”的格局。长三角及长江下游沿江地区、两湖地区、四川盆地等均属7个高风险地区之列。

阅读“长江沿岸经济区分布图”，完成下列问题。（共22分）

（1）长江上游地区进行交通运输建设时，应充分考虑的地质灾害是________，长江中游的自然灾害应主要为__________。（4分）

（2）丁经济区的核心地带属于长江经济带的________工业基地（名称），简要说明该工业基地发展的主要制约因素。(4分)

（3）乙所在省区________资源在全国占重要地位，这里交通条件优越，其矿产加工成初级产品，可以经湘黔线和_____              _铁路运往上海。（4分）

（4）甲所在平原的主要农业地域类型是________，简要评价该地区农业发展的自然条件。（10分）

简述出版物发行分类陈列调的工作程序

Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight (16) before setting down. High desert winds had (17) the airport to close all but one runway. He said that we would be (18) the city for a few minutes waiting to (19) . We were also told to remain in our seats meanwhile with our seat belts fastened (20) there might be a few bumps(颠簸). Well, that few minutes turned into about four-five minutes, including a ride that would make a roller coaster(过山车) (21) by comparison. The movement was so fierce that several passengers felt (22) and had to use airsickness bags. As you might guess, that’ s not a good thing to have happen in a(n) (23) space because it only (24) to increase the discomfort of the situation.

About twenty minutes into the adventure, the entire airplane became very (25) There was now a sense of anxiety and fear that could be (26) noticed. Every passenger simply held on for dear life …except one. A (27) was having a good time！ With each bump of the (28) , he would let out a giggle (咯咯地笑)of delight. As I observed this, I (29) that he didn’t know he was supposed to be afraid and worried about his (30) . He neither thought about the past nor about the future. Those are what we gown--ups have learned from (31) . He was (32) the ride because he had not yet been taught to fear it. Having understood this, I took a deep breath and (33) back into my seat, pretending I was (34) on a roller coaster. I smiled for the rest of the flight. I even (35) to giggle once or twice, much to the chagrin(随恼) of the man sitting next to me holding the airsickness bag.

32（）

A.seats 

B.passengers 

C.flight 

D.airplane